Does your forum use reputation points? Karma? How does it work? Do you find it is helpful or just sparks unhealthy competition among members?
No. I had once brought up this idea in my forum and my users were unanimously against the suggestion (most of them). I also believe that "reputation" is not something that is judged in terms of an arbitrary numerical rating but is a quality earned by a member's participation in a community and needs to be judged individually by the other members on a post-by-post basis. It could lead to prejudices against members who initially earn lower ratings and it would be unfair to judge their future posts in the light of their "reputation" in the interests of all.
Finally I decided not to implement it. It isn't needed on my forum and so I decided that it would be best not to burden the system with needless features.